Plasmc



OFFldE Gerald .ll. Leuck, Evanstcn, llll., assignor, by

l mes'iie assients, to Corn Products Bellm- -i I ing Company, New York, N. EL, a. corporation oi New Jersey 1 i No t: Apulicetion June it, loss, 1 a serial No. truss f i t'lllnim. lei. ice-col l .fihis in vention relates to the production of fined product than a product mode from corn! plustic ahd adhesive substances (referred. to gluten after a dertrinization pro-treatment. e'e erally' herein as plastics, or plastic solo The ingredients used may he mixed by any stances); and the object of the invention is the known method which will give an intimate and w production of such substances iroin corn gluten. uniform mixture. in some cases ordihury stir 5 Corn gluten, as the term is here used, is a icyring will he sumcient, end in other cases, partim product of the manufacture of starch irom com. ularly if any of the solid ingredients are not in It consists of the insoluble protein of the corn e'flnely eouted stute, it will be found adwith a very considerable admixture, ordinarily, vantegeous to bring about intiinete mining es m of starch. In fact, the ordinary corn gluten by use of difierential rolls. to which tails off from the starch rubl s, it 1. ,only lfhe formaldehyde should be used in a form used for separating gluten from starch, may ccnsuitable for thorough mixing with the other intain about 50% protein, 35% sterch and eredients, or xampl t r the humid pron other com constituents such as fibre, pentosons, ration lmown as formalin. the Solidp l d it; oil and ash. Gluten is used to refer specifically tion known us peralormaldehyde, may he used. it to the protein fraction or corn, hut in common To obtain the host results the acid used should parlance in this industry the term corn gluten be e trong om ucid, thetis on acid having is used to designate the protein-starch mixture e strength oi the order oi magnitude 01? t above referred to and the term is so used herein. phurie or hydrochloric ucid. Usable products dd That is, all corn gluten contains in addition to could be made by the employment or other acids 2i) the other corn substances mentioned a consider t an those mentioned. ahle amount or starch which can he removed Depending upon the use to which the product only by rather expensive methods, is to he put, the curing or heat treatment of the The present invention is based upon the dis l S m ed su s ance ml be under quite Widely co covery that this protein and starch mixture may fi r nt mp r t re conditions. F r eromhl so be plasticized and rendered, touch, hard and waif it s desired to code a. molded mass with as ter resistant first by treatment with iormaldelittle de a n d l fi & gradual inclefirfifi hyde and acid, in the presence of a suficient from mom l u to S lf is fl quantity 01; water and than by being subje ted able. ll speed oi or rather than retention to to high temperatures, I oi erect form is the desideratuin, in case the to Plastic substances have been made from corn Product WIVES as it Water resistant Bldihtisive 1m protein, after removal or all or the starch by initially high temperature may he us dchemical treatment, the removal of the starch The process is not ell, to any particuler having been regarded as necessary became f proportions of starch to protein in the material the solubility, partial or complete, oi the reectreated- 35 tion substance or substances of the starch in the The Products, genel'auy speaking, may be final product which. seriously impairs the water minded and subjected to heat and some resistance of the product. By the method of Sure for Prodlmtion of herd, tough water re this invention the starchy materials are rendered sista'nt homes of Whatever shape may he desirefl? 40 insoluble by the treatment to which the corn or they may be spread in fluid or Semi'fluid gluten is subjected so that a plastic product State as adhesives paper or other may be produced and made eflecmvely Wmer faces and subiected to heat for the production resistant without the expense elf purifying the if water refistant ponds; in the mnume corn gluten of its starch content. i of 3.? g the plloducts may? be The process of the invention may be applied g gj 2 2: g ggg mm fining to the raw corn gluten as it comes from the The general term modification as applied t0 settlelis i the driifate g itr i be iflrsm the pro-treatment by which the character of the tree. ed to go a m e, m .7. B 11 Kt? @011" starch in the corn gluten is changed. is intended m vert the tarch; a d these difierent pretrestto include the range of treatments from gelatso ments 0f the gluten will result in different Chillinization through conversion t0 dextrine, acteristics in the finished product. For example, The following examples are given for the pun corn gluten subjected to a gelatinlzing: prepose of illustration. They are not to be considtreatment will yield, when treated in accordance ered as limiting the invention to the particular with the present invention, a tougher but softer formulas specified, the intention being to cover 55 all variations and modifications within the scope current 01' air. The product 01' this treatment 01' the hereto appended claim. is then placed in an initially cold oven and heated Example 1 to 265 F.-275 F. for eight hours after the oven by he wi 81 the mated! 1mm proportion of 100 parts is then thoroughly mixed 1o onably homogeneous mass results. This mixwith the plastic substance. I This compositics,

ture, after standing for a day, enclosed in a conwhen molded and cured, as in the case 01' Extainer to prevent evaporation, has mixed thereample 1, yields a hard strong water resistant with parts oi a halt normal water solution of product.

hydrochloric acid. Nitric or sulphuric acid could The plastic substance may, however, be molded be used. The resulting plastic material-is molded without the filler, or, by giving it the desired den r 1111 11 P ur to yield a compa p sree 01' fluidity by addition 01' water, it may be uct. The amount 01 pressure is not important exused as an adhesive and cured as in Example 2.

molded product is heated in an oven to a tem- Example 4 20 Derature between 200 and 300 E, preferably 100 parts 01 corn gluten is thoroughly ground 212 F., ior two days by which treatment it acin a pebb e mfl 10 Pa Of 11811 o al y oquires hardness, strength and water rwstance. chlorlc acid solution is introduced into the mill Example 2 and the material again ground. The material is then subjected, without intermediate drying. to parts of corn gluten, oi the same composian oven temperature of 265-275 I". for eight tion as the corn gluten of Example 1, is mixed hours as in Example 3 for the purpose oi dexwith four times its weight of water in a semitrinizing the starch. The plasticizing and ourenclosed container and placed in an oven at 212 ing steps may be the same as in Example 3.

30 treatment involves loss of about 5% of water. Example 5 After cooling the material is mixed with 30 parts The procedure is the same as in Example 3 exoi formalin, 6 parts of a halt normal water solucept that the pre-treatment is such as to convert ftion of sulphuric acid and 20 parts of water and the starch in the gluten to British gum. The the mixture allowed to stand for m h ur The gluten, without acid, is placed in a cold oven and formalin may be added m t a th acid aft r the temperature raised during a two hour period an interval 1' time a in Exgmple 1, The plasto 265-275 F. and maintained at this temperaticized substance may be used as an adhesive ture for twenty hours. for wood or papen' After the material has been It will be understood that methods for modispread between the articles to be pasted together, fying the starch, to the extent desired, other 0 heat is applied, preferably a temperature of about than those specified in the above examples may 0 1''. The bond is 0! very considerable strength be employed. The prescriptions'given are merely resistant. illustrative.

Example 3 I claim: 

